The FortiClient application is compatible only with Android version 4.0 or above. If your device doesn't meet this requierment, there is no way to run it on your HP tablet. For the 4.4 version of Android (KitKat) there are some several known bugs that you can fix by visiting the following website. You can also visit the following website 1 and website 2. If none of this worked, contact the developer on the following mail address : firstname.lastname@example.org, for additional support.